Solve.-6x + 7(-3x - 6) = -64 - 5x
A. 
B. - 1
C. 1
D. 
Answer: C
Mathematics
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The graph of a function is given. Choose the answer that represents the graph of its derivative.
A. 
B. 
C. 
D. 
Mathematics
Solve the problem.The half-life of an element is 4.2 × 1012 yr. How long does it take a sample of the element to decay to 
of its original mass? Use 
where A0 is the initial amount, T is the half-life, and t is the time. (Express results in scientific notation, rounded to the nearest hundredth.)
A. 5.07 × 1012 yr B. 2.46 × 1012 yr C. 1.21 × 1012 yr D. 1.18 × 1012 yr
Mathematics
Add.
A. 14,857 B. 13,757 C. 13,847 D. 14,747
Mathematics
Evaluate the expression using the given values.x + 8y
x = -2, y = -3
A. 6 B. -26 C. -5 D. -19
Mathematics